{"id":"https://openalex.org/W2786796464","doi":"https://doi.org/10.3233/978-1-61499-830-3-1019","title":"Predicting Length of Stay for Obstetric Patients via Electronic Medical Records","display_name":"Predicting Length of Stay for Obstetric Patients via Electronic Medical Records","publication_year":2017,"publication_date":"2017-01-01","ids":{"openalex":"https://openalex.org/W2786796464","doi":"https://doi.org/10.3233/978-1-61499-830-3-1019","mag":"2786796464","pmid":"https://pubmed.ncbi.nlm.nih.gov/29295255"},"language":"en","primary_location":{"id":"doi:10.3233/978-1-61499-830-3-1019","is_oa":false,"landing_page_url":"https://doi.org/10.3233/978-1-61499-830-3-1019","pdf_url":null,"source":{"id":"https://openalex.org/S4210179765","display_name":"Studies in health technology and informatics","issn_l":"0926-9630","issn":["0926-9630","1879-8365"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Studies in Health Technology and Informatics","raw_type":"book-chapter"},"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":null,"any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5044112648","display_name":"Cheng Gao","orcid":"https://orcid.org/0000-0002-5830-3739"},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Gao Cheng","raw_affiliation_strings":["Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA"],"affiliations":[{"raw_affiliation_string":"Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA","institution_ids":["https://openalex.org/I200719446"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076495147","display_name":"Abel Kho","orcid":"https://orcid.org/0000-0003-1993-5634"},"institutions":[{"id":"https://openalex.org/I111979921","display_name":"Northwestern University","ror":"https://ror.org/000e0be47","country_code":"US","type":"education","lineage":["https://openalex.org/I111979921"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kho Abel N.","raw_affiliation_strings":["Institute for Public Health and Medicine, Northwestern University, Chicago, IL, USA"],"affiliations":[{"raw_affiliation_string":"Institute for Public Health and Medicine, Northwestern University, Chicago, IL, USA","institution_ids":["https://openalex.org/I111979921"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003860242","display_name":"Catherine H. Ivory","orcid":"https://orcid.org/0000-0002-8458-8993"},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ivory Catherine","raw_affiliation_strings":["School of Nursing, Vanderbilt University, Nashville, TN, USA"],"affiliations":[{"raw_affiliation_string":"School of Nursing, Vanderbilt University, Nashville, TN, USA","institution_ids":["https://openalex.org/I200719446"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023408319","display_name":"Sarah S. Osmundson","orcid":"https://orcid.org/0000-0002-7626-9992"},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Osmundson Sarah","raw_affiliation_strings":["Dept. of Obstetrics and Gynecology, School of Medicine, Vanderbilt University, Nashville, TN, USA"],"affiliations":[{"raw_affiliation_string":"Dept. of Obstetrics and Gynecology, School of Medicine, Vanderbilt University, Nashville, TN, USA","institution_ids":["https://openalex.org/I200719446"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090647314","display_name":"Bradley Malin","orcid":"https://orcid.org/0000-0003-3040-5175"},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Malin Bradley A.","raw_affiliation_strings":["Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA"],"affiliations":[{"raw_affiliation_string":"Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA","institution_ids":["https://openalex.org/I200719446"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100714052","display_name":"You Chen","orcid":"https://orcid.org/0000-0001-8232-8840"},"institutions":[{"id":"https://openalex.org/I200719446","display_name":"Vanderbilt University","ror":"https://ror.org/02vm5rt34","country_code":"US","type":"education","lineage":["https://openalex.org/I200719446"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Chen You","raw_affiliation_strings":["Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA"],"affiliations":[{"raw_affiliation_string":"Dept. of Biomedical Informatics, School of Medicine, Vanderbilt University, Nashville, TN, USA","institution_ids":["https://openalex.org/I200719446"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5044112648"],"corresponding_institution_ids":["https://openalex.org/I200719446"],"apc_list":null,"apc_paid":null,"fwci":7.9175,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.975,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"245","issue":null,"first_page":"1019","last_page":"1023"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10209","display_name":"Global Maternal and Child Health","score":0.9959999918937683,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10209","display_name":"Global Maternal and Child Health","score":0.9959999918937683,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11095","display_name":"Emergency and Acute Care Studies","score":0.9937000274658203,"subfield":{"id":"https://openalex.org/subfields/2711","display_name":"Emergency Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T14400","display_name":"Medical Coding and Health Information","score":0.9763000011444092,"subfield":{"id":"https://openalex.org/subfields/3605","display_name":"Health Information Management"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/medical-record","display_name":"Medical record","score":0.6799676418304443},{"id":"https://openalex.org/keywords/diagnosis-code","display_name":"Diagnosis code","score":0.6170390248298645},{"id":"https://openalex.org/keywords/baseline","display_name":"Baseline (sea)","score":0.582473874092102},{"id":"https://openalex.org/keywords/electronic-medical-record","display_name":"Electronic medical record","score":0.5461176633834839},{"id":"https://openalex.org/keywords/discriminative-model","display_name":"Discriminative model","score":0.542761504650116},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.5176042318344116},{"id":"https://openalex.org/keywords/medical-emergency","display_name":"Medical emergency","score":0.47987428307533264},{"id":"https://openalex.org/keywords/medical-history","display_name":"Medical history","score":0.47357115149497986},{"id":"https://openalex.org/keywords/health-care","display_name":"Health care","score":0.44473740458488464},{"id":"https://openalex.org/keywords/health-records","display_name":"Health records","score":0.4390271008014679},{"id":"https://openalex.org/keywords/emergency-medicine","display_name":"Emergency medicine","score":0.39197880029678345},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2946552038192749},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2199879288673401},{"id":"https://openalex.org/keywords/surgery","display_name":"Surgery","score":0.07808142900466919}],"concepts":[{"id":"https://openalex.org/C195910791","wikidata":"https://www.wikidata.org/wiki/Q1324077","display_name":"Medical record","level":2,"score":0.6799676418304443},{"id":"https://openalex.org/C45827449","wikidata":"https://www.wikidata.org/wiki/Q5270338","display_name":"Diagnosis code","level":3,"score":0.6170390248298645},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.582473874092102},{"id":"https://openalex.org/C3018060332","wikidata":"https://www.wikidata.org/wiki/Q10871684","display_name":"Electronic medical record","level":2,"score":0.5461176633834839},{"id":"https://openalex.org/C97931131","wikidata":"https://www.wikidata.org/wiki/Q5282087","display_name":"Discriminative model","level":2,"score":0.542761504650116},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5176042318344116},{"id":"https://openalex.org/C545542383","wikidata":"https://www.wikidata.org/wiki/Q2751242","display_name":"Medical emergency","level":1,"score":0.47987428307533264},{"id":"https://openalex.org/C206179267","wikidata":"https://www.wikidata.org/wiki/Q188952","display_name":"Medical history","level":2,"score":0.47357115149497986},{"id":"https://openalex.org/C160735492","wikidata":"https://www.wikidata.org/wiki/Q31207","display_name":"Health care","level":2,"score":0.44473740458488464},{"id":"https://openalex.org/C3019952477","wikidata":"https://www.wikidata.org/wiki/Q1324077","display_name":"Health records","level":3,"score":0.4390271008014679},{"id":"https://openalex.org/C194828623","wikidata":"https://www.wikidata.org/wiki/Q2861470","display_name":"Emergency medicine","level":1,"score":0.39197880029678345},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2946552038192749},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2199879288673401},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.07808142900466919},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.0},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.0},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.0},{"id":"https://openalex.org/C50522688","wikidata":"https://www.wikidata.org/wiki/Q189833","display_name":"Economic growth","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006295","descriptor_name":"Health Resources","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006295","descriptor_name":"Health Resources","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006295","descriptor_name":"Health Resources","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006760","descriptor_name":"Hospitalization","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006760","descriptor_name":"Hospitalization","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006760","descriptor_name":"Hospitalization","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007902","descriptor_name":"Length of Stay","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D007902","descriptor_name":"Length of Stay","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D007902","descriptor_name":"Length of Stay","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D009774","descriptor_name":"Obstetrics","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D009774","descriptor_name":"Obstetrics","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D009774","descriptor_name":"Obstetrics","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D011787","descriptor_name":"Quality of Health Care","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011787","descriptor_name":"Quality of Health Care","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011787","descriptor_name":"Quality of Health Care","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D057286","descriptor_name":"Electronic Health Records","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D057286","descriptor_name":"Electronic Health Records","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D057286","descriptor_name":"Electronic Health Records","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D059019","descriptor_name":"Clinical Coding","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D059019","descriptor_name":"Clinical Coding","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D059019","descriptor_name":"Clinical Coding","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":4,"locations":[{"id":"doi:10.3233/978-1-61499-830-3-1019","is_oa":false,"landing_page_url":"https://doi.org/10.3233/978-1-61499-830-3-1019","pdf_url":null,"source":{"id":"https://openalex.org/S4210179765","display_name":"Studies in health technology and informatics","issn_l":"0926-9630","issn":["0926-9630","1879-8365"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Studies in Health Technology and Informatics","raw_type":"book-chapter"},{"id":"pmid:29295255","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/29295255","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Studies in health technology and informatics","raw_type":null},{"id":"pmh:oai:pubmedcentral.nih.gov:5860660","is_oa":true,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:5860660","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/5860660","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Stud Health Technol Inform","raw_type":"Text"}],"best_oa_location":{"id":"pmh:oai:pubmedcentral.nih.gov:5860660","is_oa":true,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","display_name":"Reduced inequalities","score":0.699999988079071}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W273955616","https://openalex.org/W1858830099","https://openalex.org/W1989999116","https://openalex.org/W2002106583","https://openalex.org/W2016598657","https://openalex.org/W2036924892","https://openalex.org/W2042751011","https://openalex.org/W2054431665","https://openalex.org/W2064551188","https://openalex.org/W2076694972","https://openalex.org/W2114323543","https://openalex.org/W2129168200","https://openalex.org/W2137061487","https://openalex.org/W2141817143","https://openalex.org/W2328934084","https://openalex.org/W2331705398","https://openalex.org/W2516936793","https://openalex.org/W2529481617","https://openalex.org/W2621296242","https://openalex.org/W2950722229","https://openalex.org/W3024511163"],"related_works":["https://openalex.org/W2965546495","https://openalex.org/W4389116644","https://openalex.org/W2153315159","https://openalex.org/W3103844505","https://openalex.org/W259157601","https://openalex.org/W4205463238","https://openalex.org/W2761785940","https://openalex.org/W2386164369","https://openalex.org/W4319657117","https://openalex.org/W3049126924"],"abstract_inverted_index":{"Obstetric":[0],"care":[1,5,41],"refers":[2],"to":[3,7,46,55,72,148],"the":[4,53,91,101,131],"provided":[6],"patients":[8,22,108],"during":[9,23],"ante-,":[10],"intra-,":[11],"and":[12,36,43,166],"postpartum":[13],"periods.":[14],"Predicting":[15],"length":[16],"of":[17,96,105,125,163,170],"stay":[18],"(LOS)":[19],"for":[20,87,159],"these":[21],"their":[24],"hospitalizations":[25],"can":[26,58],"assist":[27],"healthcare":[28],"organizations":[29],"in":[30,83,109],"allocating":[31],"hospital":[32],"resources":[33],"more":[34],"effectively":[35],"efficiently,":[37],"ultimately":[38],"improving":[39],"maternal":[40],"quality":[42],"reducing":[44],"costs":[45],"patients.":[47],"In":[48],"this":[49],"paper,":[50],"we":[51],"investigate":[52],"extent":[54],"which":[56,127],"LOS":[57],"be":[59],"forecast":[60],"from":[61,100],"a":[62,68,74,84,110,139],"patient's":[63,75,140],"medical":[64,103,113],"history.":[65],"We":[66,89],"introduce":[67],"machine":[69],"learning":[70],"framework":[71,92,120],"incorporate":[73],"prior":[76],"conditions":[77],"(e.g.,":[78],"diagnostic":[79],"codes)":[80],"as":[81],"features":[82,145,155],"predictive":[85,144],"model":[86],"LOS.":[88],"evaluate":[90],"with":[93],"three":[94],"years":[95],"historical":[97],"billing":[98,157],"data":[99],"electronic":[102],"records":[104],"9188":[106],"obstetric":[107],"large":[111],"academic":[112],"center.":[114],"The":[115,142],"results":[116],"indicate":[117],"that":[118],"our":[119],"achieved":[121],"an":[122],"average":[123],"accuracy":[124,133],"49.3%,":[126],"is":[128],"higher":[129],"than":[130],"baseline":[132],"37.7%":[134],"(that":[135],"relies":[136],"solely":[137],"on":[138],"age).":[141],"most":[143],"were":[146],"found":[147],"have":[149],"statistically":[150],"significant":[151],"discriminative":[152],"ability.":[153],"These":[154],"included":[156],"codes":[158],"normal":[160],"delivery":[161],"(indicative":[162,169],"shorter":[164],"stay)":[165],"antepartum":[167],"hypertension":[168],"longer":[171],"stay).":[172]},"counts_by_year":[{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}
